Systolic blood pressure in adults is normally distributed with a mean of 112 mmHg and a standard deviation of 10 mmHg. What is the probability that an adult has a systolic blood pressure of at least 125mmHg?
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The z-score is a measure of how many standard deviations an element is from the mean. It is calculated as: Z = (X - μ) / σ where: X is the value we are interested in (125 mmHg in this case), μ is the mean (112 mmHg), σ is the standard deviation (10 mmHg). So, Show more…
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